Patent US3683019A successfully refreshed from Google Patents.
US3683019A
Expired / Lapsed
US
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2-aminolicosanedioic acids
Assignee: Ajinomoto Co Inc
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Filing: 1970-03-02
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Granted: 1972-08-08
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Expires: 1990-03-02
Abstract
Abstract 2-Aminoeicosansdiaic acids of the formula WHEREIN N IS 7 OR 8, AND R1 and R2 are hydrogen or lower alkyl, are readily prepared by Strecker reaction and hydrolysis from the mixture of methyl 9-formylstearate and methyl 10-formylstearate which results from hydroformylation of methyl oleate, and is referred to hereinafter as methyl 9(10)-formylstearate. The aqueous neutral or alkaline solutions of the acids have excellent detergent properties.
Inventors
- 👤 Hachiro Wakamatsu
- 👤 Taketoshi Okami
- 👤 Jiro Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:15
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61Q; A61Q5/00; A61Q5/02; C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/2222; C10M; C10M3/00; C11; C11D; C11D1/00; C11D1/02; C11D1/04; C11D1/10; A61K2800/00; A61K2800/74; A61K2800/75; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
19 words
A compound as set forth in claim 1, which is an alkali metal or ammonium salt of said acid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |